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authorShawn Guo2011-07-04 09:01:18 +0800
committerGrant Likely2011-07-03 23:47:22 -0600
commitf09bc831b7693f93ecb95dea7180d55b45b88e76 (patch)
treed47c3408c86b147c77dd33e5295c7892ae8a9f7f
parenta3b853633d78c3930b513ee219df48637ac82eed (diff)
dt: add 'const' for of_property_read_string parameter **out_string
The existing dt codes usually call of_get_property to get a string property and save it as a 'const char *'. The patch adds'const' for of_property_read_string parameter **out_string to make the converting of existing code a little easier. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
-rw-r--r--drivers/of/base.c2
-rw-r--r--include/linux/of.h2
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c
index b8b65fddbeb5..57ec27bed44f 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -639,7 +639,7 @@ EXPORT_SYMBOL_GPL(of_property_read_u32);
* The out_string pointer is modified only if a valid string can be decoded.
*/
int of_property_read_string(struct device_node *np, char *propname,
- char **out_string)
+ const char **out_string)
{
struct property *prop = of_find_property(np, propname, NULL);
if (!prop)
diff --git a/include/linux/of.h b/include/linux/of.h
index 4fc4c1b8d5d5..b23852002b30 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -198,7 +198,7 @@ extern struct property *of_find_property(const struct device_node *np,
extern int of_property_read_u32(struct device_node *np, char *propname,
u32 *out_value);
extern int of_property_read_string(struct device_node *np, char *propname,
- char **out_string);
+ const char **out_string);
extern int of_device_is_compatible(const struct device_node *device,
const char *);
extern int of_device_is_available(const struct device_node *device);